I'm not familiar with a 28-inch Continental. Do you mean frame size? They were typically 22" 24" 26" in that department. 27-inch wheel size.

I would echo what others are saying: keep the finish original. It can only be original once, and you've had it since new, so you sort of know where every mark came from!

Also, that bike is a 39-pound ten-speed (or is it an eight-speed?). You might decide at some point to keep it, but have a much lighter bike that you ride most of the time. The good news is your bike is about five pounds lighter than a 44-pound Varsity, if I recall correctly.